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        <title>05 资源初始化 · 高性能服务器开发 技术专栏</title>
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        <li class="header">Part I</li>
        
        
    
        <li class="chapter " data-level="1.1" data-path="../../">
            
                <a href="../../">
            
                    
                    Introduction
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.2" data-path="../C++必知必会的知识点/">
            
                <a href="../C++必知必会的知识点/">
            
                    
                    C++必知必会的知识点
            
                </a>
            

            
            <ul class="articles">
                
    
        <li class="chapter " data-level="1.2.1" data-path="../C++必知必会的知识点/如何成为一名合格的CC++开发者？.html">
            
                <a href="../C++必知必会的知识点/如何成为一名合格的CC++开发者？.html">
            
                    
                    如何成为一名合格的C/C++开发者？
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.2.2" data-path="../C++必知必会的知识点/不定参数函数实现var_arg系列的宏.html">
            
                <a href="../C++必知必会的知识点/不定参数函数实现var_arg系列的宏.html">
            
                    
                    不定参数函数实现var_arg系列的宏
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.2.3" data-path="../C++必知必会的知识点/你一定要搞明白的C函数调用方式与栈原理.html">
            
                <a href="../C++必知必会的知识点/你一定要搞明白的C函数调用方式与栈原理.html">
            
                    
                    你一定要搞明白的C函数调用方式与栈原理
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.2.4" data-path="../C++必知必会的知识点/深入理解CC++中的指针.html">
            
                <a href="../C++必知必会的知识点/深入理解CC++中的指针.html">
            
                    
                    深入理解C/C++中的指针
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.2.5" data-path="../C++必知必会的知识点/详解C++11中的智能指针.html">
            
                <a href="../C++必知必会的知识点/详解C++11中的智能指针.html">
            
                    
                    详解C++11中的智能指针
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.2.6" data-path="../C++必知必会的知识点/C++17结构化绑定.html">
            
                <a href="../C++必知必会的知识点/C++17结构化绑定.html">
            
                    
                    C++17结构化绑定
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.2.7" data-path="../C++必知必会的知识点/C++必须掌握的pimpl惯用法.html">
            
                <a href="../C++必知必会的知识点/C++必须掌握的pimpl惯用法.html">
            
                    
                    C++必须掌握的pimpl惯用法
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.2.8" data-path="../C++必知必会的知识点/用VisualStudio调试Linux程序.html">
            
                <a href="../C++必知必会的知识点/用VisualStudio调试Linux程序.html">
            
                    
                    用Visual Studio调试Linux程序
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.2.9" data-path="../C++必知必会的知识点/如何使用VisualStudio管理和阅读开源项目代码.html">
            
                <a href="../C++必知必会的知识点/如何使用VisualStudio管理和阅读开源项目代码.html">
            
                    
                    如何使用Visual Studio管理和阅读开源项目代码
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.2.10" data-path="../C++必知必会的知识点/利用cmake工具生成VisualStudio工程文件.html">
            
                <a href="../C++必知必会的知识点/利用cmake工具生成VisualStudio工程文件.html">
            
                    
                    利用cmake工具生成Visual Studio工程文件
            
                </a>
            

            
        </li>
    

            </ul>
            
        </li>
    
        <li class="chapter " data-level="1.3" data-path="../多线程/">
            
                <a href="../多线程/">
            
                    
                    多线程
            
                </a>
            

            
            <ul class="articles">
                
    
        <li class="chapter " data-level="1.3.1" data-path="../多线程/后台C++开发你一定要知道的条件变量.html">
            
                <a href="../多线程/后台C++开发你一定要知道的条件变量.html">
            
                    
                    后台C++开发你一定要知道的条件变量
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.3.2" data-path="../多线程/整型变量赋值是原子操作吗？.html">
            
                <a href="../多线程/整型变量赋值是原子操作吗？.html">
            
                    
                    整型变量赋值是原子操作吗？
            
                </a>
            

            
        </li>
    

            </ul>
            
        </li>
    

    
        
        <li class="divider"></li>
        
        
    
        <li class="chapter " data-level="2.1" data-path="../网络编程/">
            
                <a href="../网络编程/">
            
                    
                    网络编程
            
                </a>
            

            
            <ul class="articles">
                
    
        <li class="chapter " data-level="2.1.1" data-path="../网络编程/bind函数重难点解析.html">
            
                <a href="../网络编程/bind函数重难点解析.html">
            
                    
                    bind 函数重难点解析
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="2.1.2" data-path="../网络编程/connect函数在阻塞和非阻塞模式下的行为.html">
            
                <a href="../网络编程/connect函数在阻塞和非阻塞模式下的行为.html">
            
                    
                    connect 函数在阻塞和非阻塞模式下的行为
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="2.1.3" data-path="../网络编程/select函数重难点解析.html">
            
                <a href="../网络编程/select函数重难点解析.html">
            
                    
                    select 函数重难点解析
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="2.1.4" data-path="../网络编程/Linuxepoll模型（含LT模式和ET模式详解）.html">
            
                <a href="../网络编程/Linuxepoll模型（含LT模式和ET模式详解）.html">
            
                    
                    Linux epoll 模型（含LT 模式和 ET 模式详解）
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="2.1.5" data-path="../网络编程/socket的阻塞模式和非阻塞模式.html">
            
                <a href="../网络编程/socket的阻塞模式和非阻塞模式.html">
            
                    
                    socket 的阻塞模式和非阻塞模式
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="2.1.6" data-path="../网络编程/非阻塞模式下send和recv函数的返回值.html">
            
                <a href="../网络编程/非阻塞模式下send和recv函数的返回值.html">
            
                    
                    非阻塞模式下 send 和 recv 函数的返回值
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="2.1.7" data-path="../网络编程/服务器开发通信协议设计介绍.html">
            
                <a href="../网络编程/服务器开发通信协议设计介绍.html">
            
                    
                    服务器开发通信协议设计介绍
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="2.1.8" data-path="../网络编程/TCP协议如何解决粘包、半包问题.html">
            
                <a href="../网络编程/TCP协议如何解决粘包、半包问题.html">
            
                    
                    TCP 协议如何解决粘包、半包问题
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="2.1.9" data-path="../网络编程/网络通信中收发数据的正确姿势.html">
            
                <a href="../网络编程/网络通信中收发数据的正确姿势.html">
            
                    
                    网络通信中收发数据的正确姿势
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="2.1.10" data-path="../网络编程/服务器端发数据时，如果对端一直不收，怎么办？.html">
            
                <a href="../网络编程/服务器端发数据时，如果对端一直不收，怎么办？.html">
            
                    
                    服务器端发数据时，如果对端一直不收，怎么办？
            
                </a>
            

            
        </li>
    

            </ul>
            
        </li>
    

    
        
        <li class="divider"></li>
        
        
    
        <li class="chapter " data-level="3.1" data-path="../程序员必知必会的网络命令/">
            
                <a href="../程序员必知必会的网络命令/">
            
                    
                    程序员必知必会的网络命令
            
                </a>
            

            
            <ul class="articles">
                
    
        <li class="chapter " data-level="3.1.1" data-path="../程序员必知必会的网络命令/利用telnet命令发电子邮件.html">
            
                <a href="../程序员必知必会的网络命令/利用telnet命令发电子邮件.html">
            
                    
                    利用telnet命令发电子邮件
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="3.1.2" data-path="../程序员必知必会的网络命令/做Java或者C++开发都应该知道的lsof命令.html">
            
                <a href="../程序员必知必会的网络命令/做Java或者C++开发都应该知道的lsof命令.html">
            
                    
                    做Java或者C++开发都应该知道的lsof命令
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="3.1.3" data-path="../程序员必知必会的网络命令/Linux网络故障排查的瑞士军刀.html">
            
                <a href="../程序员必知必会的网络命令/Linux网络故障排查的瑞士军刀.html">
            
                    
                    Linux网络故障排查的瑞士军刀nc命令
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="3.1.4" data-path="../程序员必知必会的网络命令/Linuxtcpdump使用介绍.html">
            
                <a href="../程序员必知必会的网络命令/Linuxtcpdump使用介绍.html">
            
                    
                    Linux tcpdump使用详解
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="3.1.5" data-path="../程序员必知必会的网络命令/从抓包的角度分析connect函数的连接过程.html">
            
                <a href="../程序员必知必会的网络命令/从抓包的角度分析connect函数的连接过程.html">
            
                    
                    从抓包的角度分析connect函数的连接过程
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="3.1.6" data-path="../程序员必知必会的网络命令/服务器开发中网络数据分析与故障排查经验漫谈.html">
            
                <a href="../程序员必知必会的网络命令/服务器开发中网络数据分析与故障排查经验漫谈.html">
            
                    
                    服务器开发中网络数据分析与故障排查经验漫谈
            
                </a>
            

            
        </li>
    

            </ul>
            
        </li>
    

    
        
        <li class="header">Part II</li>
        
        
    
        <li class="chapter " data-level="4.1" data-path="../高性能服务器框架设计/">
            
                <a href="../高性能服务器框架设计/">
            
                    
                    高性能服务器框架设计
            
                </a>
            

            
            <ul class="articles">
                
    
        <li class="chapter " data-level="4.1.1" data-path="../高性能服务器框架设计/主线程与工作线程的分工.html">
            
                <a href="../高性能服务器框架设计/主线程与工作线程的分工.html">
            
                    
                    主线程与工作线程的分工
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="4.1.2" data-path="../高性能服务器框架设计/Reactor模式.html">
            
                <a href="../高性能服务器框架设计/Reactor模式.html">
            
                    
                    Reactor模式
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="4.1.3" data-path="../高性能服务器框架设计/实例：一个服务器程序的架构介绍.html">
            
                <a href="../高性能服务器框架设计/实例：一个服务器程序的架构介绍.html">
            
                    
                    实例：一个服务器程序的架构介绍
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="4.1.4" data-path="../高性能服务器框架设计/错误码系统的设计.html">
            
                <a href="../高性能服务器框架设计/错误码系统的设计.html">
            
                    
                    错误码系统的设计
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="4.1.5" data-path="../高性能服务器框架设计/日志系统的设计.html">
            
                <a href="../高性能服务器框架设计/日志系统的设计.html">
            
                    
                    日志系统的设计
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="4.1.6" data-path="../高性能服务器框架设计/如何设计断线自动重连机制.html">
            
                <a href="../高性能服务器框架设计/如何设计断线自动重连机制.html">
            
                    
                    如何设计断线自动重连机制
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="4.1.7" data-path="../高性能服务器框架设计/心跳包机制设计详解.html">
            
                <a href="../高性能服务器框架设计/心跳包机制设计详解.html">
            
                    
                    心跳包机制设计详解
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="4.1.8" data-path="../高性能服务器框架设计/业务数据处理一定要单独开线程吗.html">
            
                <a href="../高性能服务器框架设计/业务数据处理一定要单独开线程吗.html">
            
                    
                    业务数据处理一定要单独开线程吗
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="4.1.9" data-path="../高性能服务器框架设计/C++高性能服务器网络框架设计细节.html">
            
                <a href="../高性能服务器框架设计/C++高性能服务器网络框架设计细节.html">
            
                    
                    C++ 高性能服务器网络框架设计细节
            
                </a>
            

            
        </li>
    

            </ul>
            
        </li>
    

    
        
        <li class="divider"></li>
        
        
    
        <li class="chapter " data-level="5.1" data-path="../服务器开发案例实战/">
            
                <a href="../服务器开发案例实战/">
            
                    
                    服务器开发案例实战
            
                </a>
            

            
            <ul class="articles">
                
    
        <li class="chapter " data-level="5.1.1" data-path="../服务器开发案例实战/从零实现一个http服务器.html">
            
                <a href="../服务器开发案例实战/从零实现一个http服务器.html">
            
                    
                    从零实现一个http服务器
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="5.1.2" data-path="../服务器开发案例实战/从零实现一款12306刷票软件.html">
            
                <a href="../服务器开发案例实战/从零实现一款12306刷票软件.html">
            
                    
                    从零实现一款12306刷票软件
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="5.1.3" data-path="../服务器开发案例实战/从零实现一个邮件收发客户端.html">
            
                <a href="../服务器开发案例实战/从零实现一个邮件收发客户端.html">
            
                    
                    从零实现一个邮件收发客户端
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="5.1.4" data-path="../服务器开发案例实战/从零开发一个WebSocket服务器.html">
            
                <a href="../服务器开发案例实战/从零开发一个WebSocket服务器.html">
            
                    
                    从零开发一个WebSocket服务器
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="5.1.5" data-path="../服务器开发案例实战/1从一款多人联机实时对战游戏开始.html">
            
                <a href="../服务器开发案例实战/1从一款多人联机实时对战游戏开始.html">
            
                    
                    从零学习开源项目系列（一） 从一款多人联机实时对战游戏开始
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="5.1.6" data-path="../服务器开发案例实战/2最后一战概况.html">
            
                <a href="../服务器开发案例实战/2最后一战概况.html">
            
                    
                    从零学习开源项目系列（二） 最后一战概况
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="5.1.7" data-path="../服务器开发案例实战/3CSBattleMgr服务源码研究.html">
            
                <a href="../服务器开发案例实战/3CSBattleMgr服务源码研究.html">
            
                    
                    从零学习开源项目系列（三） CSBattleMgr服务源码研究
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="5.1.8" data-path="../服务器开发案例实战/4LogServer源码探究.html">
            
                <a href="../服务器开发案例实战/4LogServer源码探究.html">
            
                    
                    从零学习开源项目系列（四）LogServer源码探究
            
                </a>
            

            
        </li>
    

            </ul>
            
        </li>
    

    
        
        <li class="header">Part III</li>
        
        
    
        <li class="chapter " data-level="6.1" data-path="../TeamTalk源码解析/">
            
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                    TeamTalk IM源码分析
            
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        <li class="chapter " data-level="6.1.1" data-path="../TeamTalk源码解析/01TeamTalk介绍.html">
            
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                    01 TeamTalk介绍
            
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                    02 服务器端的程序的编译与部署
            
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                    03 服务器端的程序架构介绍
            
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        <li class="chapter " data-level="6.1.4" data-path="../TeamTalk源码解析/04服务器端db_proxy_server源码分析.html">
            
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                    04 服务器端db_proxy_server源码分析
            
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        <li class="chapter " data-level="6.1.5" data-path="../TeamTalk源码解析/05服务器端msg_server源码分析.html">
            
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                    05 服务器端msg_server源码分析
            
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        <li class="chapter " data-level="6.1.6" data-path="../TeamTalk源码解析/06服务器端login_server源码分析.html">
            
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                    06 服务器端login_server源码分析
            
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        <li class="chapter " data-level="6.1.7" data-path="../TeamTalk源码解析/07服务器端msfs源码分析.html">
            
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                    07 服务器端msfs源码分析
            
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        <li class="chapter " data-level="6.1.8" data-path="../TeamTalk源码解析/08服务器端file_server源码分析.html">
            
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                    08 服务器端file_server源码分析
            
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        <li class="chapter " data-level="6.1.9" data-path="../TeamTalk源码解析/09服务器端route_server源码分析.html">
            
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                    09 服务器端route_server源码分析
            
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                    10 开放一个TeamTalk测试服务器地址和几个测试账号
            
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                    11 pc客户端源码分析
            
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            </ul>
            
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        <li class="divider"></li>
        
        
    
        <li class="chapter " data-level="7.1" data-path="../libevent源码深度剖析/">
            
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                    libevent源码深度剖析
            
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                    libevent源码深度剖析01
            
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                    libevent源码深度剖析02
            
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                    libevent源码深度剖析03
            
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        <li class="chapter " data-level="7.1.4" data-path="../libevent源码深度剖析/libevent源码深度剖析04.html">
            
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                    libevent源码深度剖析04
            
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        <li class="chapter " data-level="7.1.5" data-path="../libevent源码深度剖析/libevent源码深度剖析05.html">
            
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                    libevent源码深度剖析05
            
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        <li class="chapter " data-level="7.1.6" data-path="../libevent源码深度剖析/libevent源码深度剖析06.html">
            
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                    libevent源码深度剖析06
            
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        <li class="chapter " data-level="7.1.7" data-path="../libevent源码深度剖析/libevent源码深度剖析07.html">
            
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                    libevent源码深度剖析07
            
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        <li class="chapter " data-level="7.1.8" data-path="../libevent源码深度剖析/libevent源码深度剖析08.html">
            
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                    libevent源码深度剖析08
            
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        <li class="chapter " data-level="7.1.9" data-path="../libevent源码深度剖析/libevent源码深度剖析09.html">
            
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                    libevent源码深度剖析09
            
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        <li class="chapter " data-level="7.1.10" data-path="../libevent源码深度剖析/libevent源码深度剖析10.html">
            
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                    libevent源码深度剖析10
            
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        <li class="chapter " data-level="7.1.11" data-path="../libevent源码深度剖析/libevent源码深度剖析11.html">
            
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                    libevent源码深度剖析11
            
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        <li class="chapter " data-level="7.1.12" data-path="../libevent源码深度剖析/libevent源码深度剖析12.html">
            
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                    libevent源码深度剖析12
            
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        <li class="chapter " data-level="7.1.13" data-path="../libevent源码深度剖析/libevent源码深度剖析13.html">
            
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                    libevent源码深度剖析13
            
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            </ul>
            
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        <li class="chapter " data-level="7.2" data-path="../leveldb源码分析/">
            
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                    leveldb源码分析
            
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                    leveldb源码分析1
            
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        <li class="chapter " data-level="7.2.2" data-path="../leveldb源码分析/leveldb源码分析2.html">
            
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                    leveldb源码分析2
            
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        <li class="chapter " data-level="7.2.3" data-path="../leveldb源码分析/leveldb源码分析3.html">
            
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                    leveldb源码分析3
            
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        <li class="chapter " data-level="7.2.4" data-path="../leveldb源码分析/leveldb源码分析4.html">
            
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                    leveldb源码分析4
            
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        <li class="chapter " data-level="7.2.5" data-path="../leveldb源码分析/leveldb源码分析5.html">
            
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                    leveldb源码分析5
            
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        <li class="chapter " data-level="7.2.6" data-path="../leveldb源码分析/leveldb源码分析6.html">
            
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                    leveldb源码分析6
            
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        <li class="chapter " data-level="7.2.7" data-path="../leveldb源码分析/leveldb源码分析7.html">
            
                <a href="../leveldb源码分析/leveldb源码分析7.html">
            
                    
                    leveldb源码分析7
            
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        </li>
    
        <li class="chapter " data-level="7.2.8" data-path="../leveldb源码分析/leveldb源码分析8.html">
            
                <a href="../leveldb源码分析/leveldb源码分析8.html">
            
                    
                    leveldb源码分析8
            
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        <li class="chapter " data-level="7.2.9" data-path="../leveldb源码分析/leveldb源码分析9.html">
            
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                    leveldb源码分析9
            
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        <li class="chapter " data-level="7.2.10" data-path="../leveldb源码分析/leveldb源码分析10.html">
            
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                    leveldb源码分析10
            
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        <li class="chapter " data-level="7.2.11" data-path="../leveldb源码分析/leveldb源码分析11.html">
            
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                    leveldb源码分析11
            
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        <li class="chapter " data-level="7.2.12" data-path="../leveldb源码分析/leveldb源码分析12.html">
            
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                    leveldb源码分析12
            
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        <li class="chapter " data-level="7.2.13" data-path="../leveldb源码分析/leveldb源码分析13.html">
            
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                    leveldb源码分析13
            
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        <li class="chapter " data-level="7.2.14" data-path="../leveldb源码分析/leveldb源码分析14.html">
            
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                    leveldb源码分析14
            
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        <li class="chapter " data-level="7.2.15" data-path="../leveldb源码分析/leveldb源码分析15.html">
            
                <a href="../leveldb源码分析/leveldb源码分析15.html">
            
                    
                    leveldb源码分析15
            
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        <li class="chapter " data-level="7.2.16" data-path="../leveldb源码分析/leveldb源码分析16.html">
            
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                    leveldb源码分析16
            
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        <li class="chapter " data-level="7.2.17" data-path="../leveldb源码分析/leveldb源码分析17.html">
            
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                    leveldb源码分析17
            
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        <li class="chapter " data-level="7.2.18" data-path="../leveldb源码分析/leveldb源码分析18.html">
            
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                    leveldb源码分析18
            
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        <li class="chapter " data-level="7.2.19" data-path="../leveldb源码分析/leveldb源码分析19.html">
            
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                    leveldb源码分析19
            
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        <li class="chapter " data-level="7.2.20" data-path="../leveldb源码分析/leveldb源码分析20.html">
            
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                    leveldb源码分析20
            
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        <li class="chapter " data-level="7.2.21" data-path="../leveldb源码分析/leveldb源码分析21.html">
            
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                    leveldb源码分析21
            
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        <li class="chapter " data-level="7.2.22" data-path="../leveldb源码分析/leveldb源码分析22.html">
            
                <a href="../leveldb源码分析/leveldb源码分析22.html">
            
                    
                    leveldb源码分析22
            
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            </ul>
            
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        <li class="divider"></li>
        
        
    
        <li class="chapter " data-level="8.1" data-path="./">
            
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                    Memcached源码分析
            
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                    00 服务器资源调整
            
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        <li class="chapter " data-level="8.1.2" data-path="01初始化参数解析.html">
            
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                    01 初始化参数解析
            
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        <li class="chapter " data-level="8.1.3" data-path="02网络监听的建立.html">
            
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                    02 网络监听的建立
            
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                    03 网络连接建立
            
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        <li class="chapter " data-level="8.1.5" data-path="04内存初始化.html">
            
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                    04 内存初始化
            
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        <li class="chapter active" data-level="8.1.6" data-path="05资源初始化.html">
            
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                    05 资源初始化
            
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        <li class="chapter " data-level="8.1.7" data-path="06get过程.html">
            
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                    06 get过程
            
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        <li class="chapter " data-level="8.1.8" data-path="07cas属性.html">
            
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                    07 cas属性
            
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        <li class="chapter " data-level="8.1.9" data-path="08内存池.html">
            
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                    08 内存池
            
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        <li class="chapter " data-level="8.1.10" data-path="09连接队列.html">
            
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                    09 连接队列
            
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        <li class="chapter " data-level="8.1.11" data-path="10Hash表操作.html">
            
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                    10 Hash表操作
            
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        <li class="chapter " data-level="8.1.12" data-path="12set操作.html">
            
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                    12 set操作
            
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        <li class="chapter " data-level="8.1.13" data-path="13do_item_alloc操作.html">
            
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                    13 do_item_alloc操作
            
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                    14 item结构
            
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                    15 Hash表扩容
            
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                    16 线程交互
            
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                    17 状态机
            
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                    游戏开发专题
            
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                    1 游戏服务器开发的基本体系与服务器端开发的一些建议
            
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                    2 网络游戏服务器开发框架设计介绍
            
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                    3 游戏后端开发需要掌握的知识
            
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        <li class="chapter " data-level="9.1.4" data-path="../游戏开发专题/4关于游戏服务端架构的整理.html">
            
                <a href="../游戏开发专题/4关于游戏服务端架构的整理.html">
            
                    
                    4 关于游戏服务端架构的整理
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="9.1.5" data-path="../游戏开发专题/5各类游戏对应的服务端架构.html">
            
                <a href="../游戏开发专题/5各类游戏对应的服务端架构.html">
            
                    
                    5 各类游戏对应的服务端架构
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="9.1.6" data-path="../游戏开发专题/6从腾讯QQgame高性能服务器集群架构看“分而治之”与“自治”等分布式架构设计原则.html">
            
                <a href="../游戏开发专题/6从腾讯QQgame高性能服务器集群架构看“分而治之”与“自治”等分布式架构设计原则.html">
            
                    
                    6 从腾讯QQgame高性能服务器集群架构看“分而治之”与“自治”等分布式架构设计原则
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="9.1.7" data-path="../游戏开发专题/7QQ游戏百万人同时在线服务器架构实现.html">
            
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                    7 QQ游戏百万人同时在线服务器架构实现
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="9.1.8" data-path="../游戏开发专题/8大型多人在线游戏服务器架构设计.html">
            
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                    8 大型多人在线游戏服务器架构设计
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="9.1.9" data-path="../游戏开发专题/9百万用户级游戏服务器架构设计.html">
            
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                    9 百万用户级游戏服务器架构设计
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="9.1.10" data-path="../游戏开发专题/10十万在线的WebGame的数据库设计思路.html">
            
                <a href="../游戏开发专题/10十万在线的WebGame的数据库设计思路.html">
            
                    
                    10 十万在线的WebGame的数据库设计思路
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="9.1.11" data-path="../游戏开发专题/11一种高性能网络游戏服务器架构设计.html">
            
                <a href="../游戏开发专题/11一种高性能网络游戏服务器架构设计.html">
            
                    
                    11 一种高性能网络游戏服务器架构设计
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="9.1.12" data-path="../游戏开发专题/12经典游戏服务器端架构概述.html">
            
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                    12 经典游戏服务器端架构概述
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="9.1.13" data-path="../游戏开发专题/13游戏跨服架构进化之路.html">
            
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                    13 游戏跨服架构进化之路
            
                </a>
            

            
        </li>
    

            </ul>
            
        </li>
    

    
        
        <li class="header">Part IV</li>
        
        
    
        <li class="chapter " data-level="10.1" data-path="../程序员面试题精讲/">
            
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                </a>
            

            
            <ul class="articles">
                
    
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                    腾讯后台开发实习生技能要求
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="10.1.2" data-path="../程序员面试题精讲/聊聊如何拿大厂的offer.html">
            
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                    聊聊如何拿大厂的 offer
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="10.1.3" data-path="../程序员面试题精讲/网络通信题目集锦.html">
            
                <a href="../程序员面试题精讲/网络通信题目集锦.html">
            
                    
                    网络通信题目集锦
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="10.1.4" data-path="../程序员面试题精讲/我面试后端开发经理的经历.html">
            
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                    我面试后端开发经理的经历
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="10.1.5" data-path="../程序员面试题精讲/LinuxCC++后端开发面试问哪些问题.html">
            
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                    Linux C/C++后端开发面试问哪些问题
            
                </a>
            

            
        </li>
    

            </ul>
            
        </li>
    
        <li class="chapter " data-level="10.2" data-path="../职业规划/">
            
                <a href="../职业规划/">
            
                    
                    职业规划
            
                </a>
            

            
            <ul class="articles">
                
    
        <li class="chapter " data-level="10.2.1" data-path="../职业规划/给工作4年迷茫的程序员们的一点建议.html">
            
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                    给工作 4 年迷茫的程序员们的一点建议
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="10.2.2" data-path="../职业规划/聊聊技术人员的常见的职业问题.html">
            
                <a href="../职业规划/聊聊技术人员的常见的职业问题.html">
            
                    
                    聊聊技术人员的常见的职业问题
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="10.2.3" data-path="../职业规划/写给那些傻傻想做服务器开发的朋友.html">
            
                <a href="../职业规划/写给那些傻傻想做服务器开发的朋友.html">
            
                    
                    写给那些傻傻想做服务器开发的朋友
            
                </a>
            

            
        </li>
    

            </ul>
            
        </li>
    
        <li class="chapter " data-level="10.3" data-path="../自我提升与开源代码/">
            
                <a href="../自我提升与开源代码/">
            
                    
                    自我提升与开源代码
            
                </a>
            

            
            <ul class="articles">
                
    
        <li class="chapter " data-level="10.3.1" data-path="../自我提升与开源代码/2020年好好读一读开源代码吧.html">
            
                <a href="../自我提升与开源代码/2020年好好读一读开源代码吧.html">
            
                    
                    2020 年好好读一读开源代码吧
            
                </a>
            

            
        </li>
    

            </ul>
            
        </li>
    
        <li class="chapter " data-level="10.4" data-path="../后端开发相关的书籍/">
            
                <a href="../后端开发相关的书籍/">
            
                    
                    后端开发相关的书籍
            
                </a>
            

            
            <ul class="articles">
                
    
        <li class="chapter " data-level="10.4.1" data-path="../后端开发相关的书籍/后台开发应该读的书.html">
            
                <a href="../后端开发相关的书籍/后台开发应该读的书.html">
            
                    
                    后台开发应该读的书
            
                </a>
            

            
        </li>
    

            </ul>
            
        </li>
    
        <li class="chapter " data-level="10.5" data-path="../程序员的简历/">
            
                <a href="../程序员的简历/">
            
                    
                    程序员的简历
            
                </a>
            

            
            <ul class="articles">
                
    
        <li class="chapter " data-level="10.5.1" data-path="../程序员的简历/程序员如何写简历.html">
            
                <a href="../程序员的简历/程序员如何写简历.html">
            
                    
                    程序员如何写简历
            
                </a>
            

            
        </li>
    

            </ul>
            
        </li>
    
        <li class="chapter " data-level="10.6" data-path="../程序员的薪资与年终奖那些事儿/">
            
                <a href="../程序员的薪资与年终奖那些事儿/">
            
                    
                    程序员的薪资与年终奖那些事儿
            
                </a>
            

            
            <ul class="articles">
                
    
        <li class="chapter " data-level="10.6.1" data-path="../程序员的薪资与年终奖那些事儿/技术面试与HR谈薪资技巧.html">
            
                <a href="../程序员的薪资与年终奖那些事儿/技术面试与HR谈薪资技巧.html">
            
                    
                    技术面试与HR谈薪资技巧
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="10.6.2" data-path="../程序员的薪资与年终奖那些事儿/聊一聊程序员如何增加收入.html">
            
                <a href="../程序员的薪资与年终奖那些事儿/聊一聊程序员如何增加收入.html">
            
                    
                    聊一聊程序员如何增加收入
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="10.6.3" data-path="../程序员的薪资与年终奖那些事儿/谈一谈年终奖.html">
            
                <a href="../程序员的薪资与年终奖那些事儿/谈一谈年终奖.html">
            
                    
                    谈一谈年终奖
            
                </a>
            

            
        </li>
    

            </ul>
            
        </li>
    
        <li class="chapter " data-level="10.7" data-path="../程序员的烦心事/">
            
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                    程序员的烦心事
            
                </a>
            

            
            <ul class="articles">
                
    
        <li class="chapter " data-level="10.7.1" data-path="../程序员的烦心事/拒绝了一家公司的offer后，他们的副总和hr总监同时打电话来询问拒绝原因并极力要求加入，我该不该去？.html">
            
                <a href="../程序员的烦心事/拒绝了一家公司的offer后，他们的副总和hr总监同时打电话来询问拒绝原因并极力要求加入，我该不该去？.html">
            
                    
                    拒绝了一家公司的offer后，他们的副总和hr总监同时打电话来询问拒绝原因并极力要求加入，我该不该去？
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="10.7.2" data-path="../程序员的烦心事/我是一名程序员，结婚时女友要求我用两年的工资作为彩礼，我该不该答应？.html">
            
                <a href="../程序员的烦心事/我是一名程序员，结婚时女友要求我用两年的工资作为彩礼，我该不该答应？.html">
            
                    
                    我是一名程序员，结婚时女友要求我用两年的工资作为彩礼，我该不该答应？
            
                </a>
            

            
        </li>
    

            </ul>
            
        </li>
    
        <li class="chapter " data-level="10.8" data-path="../作者的故事/">
            
                <a href="../作者的故事/">
            
                    
                    作者的故事
            
                </a>
            

            
            <ul class="articles">
                
    
        <li class="chapter " data-level="10.8.1" data-path="../作者的故事/我的2019.html">
            
                <a href="../作者的故事/我的2019.html">
            
                    
                    我的 2019
            
                </a>
            

            
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        <li class="chapter " data-level="10.8.2" data-path="../作者的故事/我是如何年薪五十万的.html">
            
                <a href="../作者的故事/我是如何年薪五十万的.html">
            
                    
                    我是如何年薪五十万的
            
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						<div id="anchor-navigation-ex-navbar"><i class="fa fa-navicon"></i><ul><li><span class="title-icon "></span><a href="#memcached&#x6E90;&#x7801;&#x9605;&#x8BFB;&#x4E94;-&#x8D44;&#x6E90;&#x521D;&#x59CB;&#x5316;"><b></b>Memcached&#x6E90;&#x7801;&#x9605;&#x8BFB;&#x4E94; &#x8D44;&#x6E90;&#x521D;&#x59CB;&#x5316;</a></li></ul></div><h1 id="memcached&#x6E90;&#x7801;&#x9605;&#x8BFB;&#x4E94;-&#x8D44;&#x6E90;&#x521D;&#x59CB;&#x5316;"><a name="memcached&#x6E90;&#x7801;&#x9605;&#x8BFB;&#x4E94;-&#x8D44;&#x6E90;&#x521D;&#x59CB;&#x5316;" class="anchor-navigation-ex-anchor" href="#memcached&#x6E90;&#x7801;&#x9605;&#x8BFB;&#x4E94;-&#x8D44;&#x6E90;&#x521D;&#x59CB;&#x5316;"><i class="fa fa-link" aria-hidden="true"></i></a>Memcached&#x6E90;&#x7801;&#x9605;&#x8BFB;&#x4E94; &#x8D44;&#x6E90;&#x521D;&#x59CB;&#x5316;</h1>
<p><code>Memcached</code>&#x5185;&#x90E8;&#x6709;<strong>hash&#x8868;&#xFF0C;&#x5404;&#x79CD;&#x7EDF;&#x8BA1;&#x4FE1;&#x606F;&#xFF0C;&#x5DE5;&#x4F5C;&#x7EBF;&#x7A0B;&#xFF0C;&#x7F51;&#x7EDC;&#xFF0C;&#x8FDE;&#x63A5;&#xFF0C;&#x5185;&#x5B58;&#x7ED3;&#x6784;</strong>&#x7B49;&#xFF0C;&#x5728;memcached&#x542F;&#x52A8;&#x65F6;(&#x6267;&#x884C;main&#x51FD;&#x6570;)&#xFF0C;&#x4F1A;&#x5BF9;&#x8FD9;&#x4E9B;&#x8D44;&#x6E90;&#x8FDB;&#x884C;&#x521D;&#x59CB;&#x5316;&#x7684;&#xFF0C;&#x7F51;&#x7EDC;&#x548C;&#x5185;&#x5B58;&#x7684;&#x521D;&#x59CB;&#x5316;&#x64CD;&#x4F5C;&#x653E;&#x5230;&#x540E;&#x7EED;&#x5206;&#x6790;&#xFF0C;&#x8FD9;&#x6B21;&#x5206;&#x6790;hash&#x8868;&#xFF0C;&#x7EDF;&#x8BA1;&#x4FE1;&#x606F;&#xFF0C;&#x5DE5;&#x4F5C;&#x7EBF;&#x7A0B;&#xFF0C;&#x7F51;&#x7EDC;&#x8FDE;&#x63A5;&#x7684;&#x521D;&#x59CB;&#x5316;&#x8FC7;&#x7A0B;&#x3002;</p>
<p><strong>1 hash&#x8868;&#x7684;&#x521D;&#x59CB;&#x5316;</strong></p>
<pre class="language-"><code>//hash&#x8868;&#x7684;&#x521D;&#x59CB;&#x5316;&#xFF0C;&#x4F20;&#x5165;&#x7684;&#x53C2;&#x6570;&#x662F;&#x542F;&#x52A8;&#x65F6;&#x4F20;&#x5165;&#x7684;
assoc_init(settings.hashpower_init);
//hashsize&#x7684;&#x5B9E;&#x73B0;
#define hashsize(n) ((ub4)1&lt;&lt;(n))
//&#x4E3B;hash&#x8868;&#x7ED3;&#x6784;&#x5B9A;&#x4E49;&#xFF0C;&#x5728;hash&#x8868;&#x6269;&#x5BB9;&#x65F6;&#xFF0C;&#x4F1A;&#x6709;&#x6B21;hash&#x8868;&#xFF0C;&#x6240;&#x4EE5;&#x6709;&#x4E3B;&#x6B21;hash&#x8868;&#x533A;&#x5206;&#xFF0C;&#x8BE5;&#x7ED3;&#x6784;&#x662F;&#x6307;&#x9488;&#x7684;&#x6307;&#x9488;&#xFF0C;&#x4E5F;&#x5373;&#x76F8;&#x5F53;&#x4E8E;&#x6570;&#x7EC4;&#x6307;&#x9488;
static item** primary_hashtable = 0;

void assoc_init(const int hashtable_init) {
    if (hashtable_init) {
        //&#x5982;&#x679C;&#x8BBE;&#x7F6E;&#x4E86;&#x521D;&#x59CB;&#x5316;&#x53C2;&#x6570;&#xFF0C;&#x5219;&#x6309;&#x8BBE;&#x7F6E;&#x7684;&#x53C2;&#x6570;&#x8FDB;&#x884C;&#x521D;&#x59CB;&#x5316;
        hashpower = hashtable_init;
    }

    //hashpower&#x7684;&#x9ED8;&#x8BA4;&#x503C;&#x4E3A;16,&#x5982;&#x679C;&#x672A;&#x8BBE;&#x7F6E;&#x65B0;&#x503C;&#xFF0C;&#x5219;&#x6309;&#x9ED8;&#x8BA4;&#x503C;&#x8FDB;&#x884C;&#x521D;&#x59CB;&#x5316;
    primary_hashtable = calloc(hashsize(hashpower), sizeof(void *));
    if (! primary_hashtable) {
        fprintf(stderr, &quot;Failed to init hashtable.\n&quot;);
        exit(EXIT_FAILURE);
    }

    STATS_LOCK();//&#x5168;&#x5C40;&#x7EDF;&#x8BA1;&#x4FE1;&#x606F;&#x52A0;&#x9501;&#xFF0C;&#x4FDD;&#x8BC1;&#x6570;&#x636E;&#x540C;&#x6B65;
    stats.hash_power_level = hashpower;
    stats.hash_bytes = hashsize(hashpower) * sizeof(void *);
    STATS_UNLOCK();
}
</code></pre><p><strong>2 &#x7EDF;&#x8BA1;&#x4FE1;&#x606F;&#x7684;&#x521D;&#x59CB;&#x5316;</strong></p>
<p><code>Memcached</code>&#x5185;&#x90E8;&#x6709;&#x5F88;&#x591A;&#x5168;&#x5C40;&#x7684;&#x7EDF;&#x8BA1;&#x4FE1;&#x606F;&#xFF0C;&#x7528;&#x4E8E;&#x5B9E;&#x65F6;&#x83B7;&#x53D6;&#x5404;&#x4E2A;&#x8D44;&#x6E90;&#x7684;&#x4F7F;&#x7528;&#x60C5;&#x51B5;&#xFF0C;&#x540E;&#x9762;&#x5C06;&#x4F1A;&#x770B;&#x5230;&#xFF0C;&#x6240;&#x6709;&#x5BF9;&#x7EDF;&#x8BA1;&#x4FE1;&#x606F;&#x7684;&#x66F4;&#x65B0;&#x90FD;&#x9700;&#x8981;&#x52A0;&#x9501;&#xFF0C;&#x800C;&#x8FD9;&#x4E9B;&#x4FE1;&#x606F;&#x7684;&#x66F4;&#x65B0;&#x662F;&#x548C;Memcached&#x7684;&#x64CD;&#x4F5C;&#x6B21;&#x6570;&#x540C;&#x6570;&#x91CF;&#x7EA7;&#x7684;&#xFF0C;&#x6240;&#x4EE5;&#xFF0C;&#x5728;&#x4E00;&#x5B9A;&#x7A0B;&#x5EA6;&#x6765;&#x8BF4;&#xFF0C;&#x8FD9;&#x4E9B;&#x7EDF;&#x8BA1;&#x4FE1;&#x606F;&#x5BF9;<strong>&#x6027;&#x80FD;</strong>&#x6709;&#x5F71;&#x54CD;&#x3002;</p>
<p>stats&#x7ED3;&#x6784;&#x662F;&#x5BF9;&#x7EDF;&#x8BA1;&#x4FE1;&#x606F;&#x7684;&#x4E00;&#x4E2A;&#x62BD;&#x8C61;&#xFF0C;&#x5404;&#x4E2A;&#x5B57;&#x6BB5;&#x90FD;&#x6BD4;&#x8F83;&#x597D;&#x7406;&#x89E3;&#xFF0C;&#x4E0D;&#x505A;&#x89E3;&#x91CA;&#x3002;</p>
<pre class="language-"><code>struct stats {
    pthread_mutex_t mutex;
    unsigned int    curr_items;
    unsigned int    total_items;
    uint64_t        curr_bytes;
    unsigned int    curr_conns;
    unsigned int    total_conns;
    uint64_t        rejected_conns;
    unsigned int    reserved_fds;
    unsigned int    conn_structs;
    uint64_t        get_cmds;
    uint64_t        set_cmds;
    uint64_t        touch_cmds;
    uint64_t        get_hits;
    uint64_t        get_misses;
    uint64_t        touch_hits;
    uint64_t        touch_misses;
    uint64_t        evictions;
    uint64_t        reclaimed;
    time_t          started;          /* when the process was started */
    bool            accepting_conns;  /* whether we are currently accepting */
    uint64_t        listen_disabled_num;
    unsigned int    hash_power_level; /* Better hope it&apos;s not over 9000 */
    uint64_t        hash_bytes;       /* size used for hash tables */
    bool            hash_is_expanding; /* If the hash table is being expanded */
    uint64_t        expired_unfetched; /* items reclaimed but never touched */
    uint64_t        evicted_unfetched; /* items evicted but never touched */
    bool            slab_reassign_running; /* slab reassign in progress */
    uint64_t        slabs_moved;       /* times slabs were moved around */
};
</code></pre><p>&#x7EDF;&#x8BA1;&#x4FE1;&#x606F;&#x7684;&#x521D;&#x59CB;&#x5316;&#x4E5F;&#x5C31;&#x662F;&#x5BF9;stats&#x53D8;&#x91CF;&#x7684;&#x4E00;&#x4E2A;&#x521D;&#x59CB;&#x5316;&#x3002;</p>
<pre class="language-"><code>//&#x5168;&#x5C40;&#x5BF9;&#x8C61;&#x7684;&#x5B9A;&#x4E49;
struct stats stats;
//&#x5168;&#x5C40;&#x53D8;&#x91CF;&#x7684;&#x521D;&#x59CB;&#x5316;&#xFF0C;&#x8BE5;&#x5168;&#x5C40;&#x53D8;&#x91CF;&#x5728;memcached&#x542F;&#x52A8;&#x4E4B;&#x540E;&#xFF0C;&#x4E00;&#x76F4;&#x4F7F;&#x7528;
static void stats_init(void)
{
    stats.curr_items = stats.total_items = stats.curr_conns =
                       stats.total_conns = stats.conn_structs = 0;
    stats.get_cmds = stats.set_cmds = stats.get_hits = stats.get_misses =
                     stats.evictions = stats.reclaimed = 0;
    stats.touch_cmds = stats.touch_misses = stats.touch_hits =
                       stats.rejected_conns = 0;
    stats.curr_bytes = stats.listen_disabled_num = 0;
    stats.hash_power_level = stats.hash_bytes = stats.hash_is_expanding = 0;
    stats.expired_unfetched = stats.evicted_unfetched = 0;
    stats.slabs_moved = 0;
    stats.accepting_conns = true; /* assuming we start in this state. */
    stats.slab_reassign_running = false;

    /* make the time we started always be 2 seconds before we really
     did, so time(0) - time.started is never zero.  if so, things
     like &apos;settings.oldest_live&apos; which act as booleans as well as
     values are now false in boolean context... */
    process_started = time(0) - 2;
    stats_prefix_init();
}
</code></pre><p><strong>3 &#x5DE5;&#x4F5C;&#x7EBF;&#x7A0B;&#x7684;&#x521D;&#x59CB;&#x5316;</strong></p>
<p><code>Memcached</code>&#x91C7;&#x7528;&#x4E86;&#x5178;&#x578B;&#x7684;<code>Master-Worker</code>&#x7684;&#x7EBF;&#x7A0B;&#x6A21;&#x5F0F;&#xFF0C;Master&#x5C31;&#x662F;&#x7531;main&#x7EBF;&#x7A0B;&#x6765;&#x5145;&#x5F53;&#xFF0C;&#x800C;Worker&#x7EBF;&#x7A0B;&#x5219;&#x662F;&#x901A;&#x8FC7;Pthread&#x521B;&#x5EFA;&#x7684;&#x3002;</p>
<pre class="language-"><code>//&#x4F20;&#x5165;&#x7EBF;&#x7A0B;&#x4E2A;&#x6570;&#x548C;libevent&#x7684;main_base&#x5B9E;&#x4F8B;
thread_init(settings.num_threads, main_base);


//&#x5DE5;&#x4F5C;&#x7EBF;&#x7A0B;&#x521D;&#x59CB;&#x5316;
void thread_init(int nthreads, struct event_base *main_base) {
    int         i;
    int         power;
    //&#x521D;&#x59CB;&#x5316;&#x5404;&#x79CD;&#x9501;&#x548C;&#x6761;&#x4EF6;&#x53D8;&#x91CF;
    pthread_mutex_init(&amp;cache_lock, NULL);
    pthread_mutex_init(&amp;stats_lock, NULL);

    pthread_mutex_init(&amp;init_lock, NULL);
    pthread_cond_init(&amp;init_cond, NULL);

    pthread_mutex_init(&amp;cqi_freelist_lock, NULL);
    cqi_freelist = NULL;

    //Memcached&#x5BF9;hash&#x6876;&#x7684;&#x9501;&#x91C7;&#x7528;&#x5206;&#x6BB5;&#x9501;&#xFF0C;&#x6309;&#x7EBF;&#x7A0B;&#x4E2A;&#x6570;&#x6765;&#x5206;&#x6BB5;&#xFF0C;&#x9ED8;&#x8BA4;&#x603B;&#x5171;&#x662F;1&lt;&lt;16&#x4E2A;hash&#x6876;&#xFF0C;&#x800C;&#x9501;&#x7684;&#x6570;&#x76EE;&#x662F;1&lt;&lt;power&#x4E2A; 
    /* Want a wide lock table, but don&apos;t waste memory */
    if (nthreads &lt; 3) {
        power = 10;
    } else if (nthreads &lt; 4) {
        power = 11;
    } else if (nthreads &lt; 5) {
        power = 12;
    } else {
        /* 8192 buckets, and central locks don&apos;t scale much past 5 threads */
        power = 13;
    }

    item_lock_count = hashsize(power);
    //&#x7533;&#x8BF7;1&lt;&lt;power&#x4E2A;pthread_mutex_t&#x9501;&#xFF0C;&#x4FDD;&#x5B58;&#x5728;item_locks&#x6570;&#x7EC4;&#x3002;
    item_locks = calloc(item_lock_count, sizeof(pthread_mutex_t));
    if (! item_locks) {
        perror(&quot;Can&apos;t allocate item locks&quot;);
        exit(1);
    }

    //&#x5BF9;&#x8FD9;&#x4E9B;&#x9501;&#x8FDB;&#x884C;&#x521D;&#x59CB;&#x5316;&#xFF0C;&#x8FD9;&#x90E8;&#x5206;&#x53EF;&#x53C2;&#x8003;APUE&#x7684;&#x7EBF;&#x7A0B;&#x90E8;&#x5206;
    for (i = 0; i &lt; item_lock_count; i++) {
        pthread_mutex_init(&amp;item_locks[i], NULL);
    }

    /*&#x521B;&#x5EFA;&#x7EBF;&#x7A0B;&#x7684;&#x5C40;&#x90E8;&#x53D8;&#x91CF;&#xFF0C;&#x8BE5;&#x5C40;&#x90E8;&#x53D8;&#x91CF;&#x7684;&#x540D;&#x79F0;&#x4E3A;item_lock_type_key,&#x7528;&#x4E8E;&#x4FDD;&#x5B58;&#x4E3B;hash&#x8868;&#x6240;&#x6301;&#x6709;&#x7684;&#x9501;&#x7684;&#x7C7B;&#x578B;
    &#x4E3B;hash&#x8868;&#x5728;&#x8FDB;&#x884C;&#x6269;&#x5BB9;&#x65F6;&#xFF0C;&#x8BE5;&#x9501;&#x7C7B;&#x578B;&#x4F1A;&#x53D8;&#x4E3A;&#x5168;&#x5C40;&#x7684;&#x9501;&#xFF0C;&#x5426;&#x5219;(&#x4E0D;&#x5728;&#x6269;&#x5BB9;&#x8FC7;&#x7A0B;&#x4E2D;)&#xFF0C;&#x5219;&#x662F;&#x5C40;&#x90E8;&#x9501;*/
    pthread_key_create(&amp;item_lock_type_key, NULL);
    pthread_mutex_init(&amp;item_global_lock, NULL);

    //&#x7533;&#x8BF7;nthreds&#x4E2A;&#x5DE5;&#x4F5C;&#x7EBF;&#x7A0B;,LIBEVENT_THREAD&#x662F;Memcached&#x5185;&#x90E8;&#x5BF9;&#x5DE5;&#x4F5C;&#x7EBF;&#x7A0B;&#x7684;&#x4E00;&#x4E2A;&#x5C01;&#x88C5;
    threads = calloc(nthreads, sizeof(LIBEVENT_THREAD));
    if (! threads) {
        perror(&quot;Can&apos;t allocate thread descriptors&quot;);
        exit(1);
    }

    /*&#x5206;&#x53D1;&#x7EBF;&#x7A0B;&#x7684;&#x521D;&#x59CB;&#x5316;,&#x5206;&#x53D1;&#x7EBF;&#x7A0B;&#x7684;base&#x4E3A;main_base
    &#x7EBF;&#x7A0B;id&#x4E3A;main&#x7EBF;&#x7A0B;&#x7684;&#x7EBF;&#x7A0B;id*/
    dispatcher_thread.base = main_base;
    dispatcher_thread.thread_id = pthread_self();
    //&#x5DE5;&#x4F5C;&#x7EBF;&#x7A0B;&#x7684;&#x521D;&#x59CB;&#x5316;,&#x5DE5;&#x4F5C;&#x7EBF;&#x7A0B;&#x548C;&#x4E3B;&#x7EBF;&#x7A0B;(main&#x7EBF;&#x7A0B;)&#x662F;&#x901A;&#x8FC7;pipe&#x7BA1;&#x9053;&#x8FDB;&#x884C;&#x901A;&#x4FE1;&#x7684;
    for (i = 0; i &lt; nthreads; i++) {
        int fds[2];
        if (pipe(fds)) {//&#x521D;&#x59CB;&#x5316;pipe&#x7BA1;&#x9053;
            perror(&quot;Can&apos;t create notify pipe&quot;);
            exit(1);
        }

        threads[i].notify_receive_fd = fds[0];//&#x8BFB;&#x7BA1;&#x9053;&#x7ED1;&#x5B9A;&#x5230;&#x5DE5;&#x4F5C;&#x7EBF;&#x7A0B;&#x7684;&#x63A5;&#x6536;&#x6D88;&#x606F;&#x7684;&#x63CF;&#x8FF0;&#x7B26;
        threads[i].notify_send_fd = fds[1];//&#x5199;&#x7BA1;&#x9053;&#x7ED1;&#x5B9A;&#x5230;&#x5DE5;&#x4F5C;&#x7EBF;&#x7A0B;&#x7684;&#x53D1;&#x9001;&#x6D88;&#x606F;&#x7684;&#x63CF;&#x8FF0;&#x7B26;

        setup_thread(&amp;threads[i]);//&#x6DFB;&#x52A0;&#x5DE5;&#x4F5C;&#x7EBF;&#x7A0B;&#x5230;libevent&#x4E2D;
        /* Reserve three fds for the libevent base, and two for the pipe */
        stats.reserved_fds += 5;//&#x7EDF;&#x8BA1;&#x4FE1;&#x606F;&#x66F4;&#x65B0;
    }

    //&#x521B;&#x5EFA;&#x5DE5;&#x4F5C;&#x7EBF;&#x7A0B;
    for (i = 0; i &lt; nthreads; i++) {
        create_worker(worker_libevent, &amp;threads[i]);
    }

    //&#x7B49;&#x5F85;&#x6240;&#x6709;&#x5DE5;&#x4F5C;&#x7EBF;&#x7A0B;&#x521B;&#x5EFA;&#x5B8C;&#x6BD5;
    pthread_mutex_lock(&amp;init_lock);
    wait_for_thread_registration(nthreads);
    pthread_mutex_unlock(&amp;init_lock);
}

//Memcached&#x5185;&#x90E8;&#x5DE5;&#x4F5C;&#x7EBF;&#x7A0B;&#x7684;&#x5C01;&#x88C5;
typedef struct {
    pthread_t thread_id;       //&#x7EBF;&#x7A0B;ID
    struct event_base *base;   //libevent&#x7684;&#x4E0D;&#x662F;&#x7EBF;&#x7A0B;&#x5B89;&#x5168;&#x7684;&#xFF0C;&#x6BCF;&#x4E2A;&#x5DE5;&#x4F5C;&#x7EBF;&#x7A0B;&#x6301;&#x6709;&#x4E00;&#x4E2A;libevent&#x5B9E;&#x4F8B;&#xFF0C;&#x7528;&#x4E8E;pipe&#x7BA1;&#x9053;&#x901A;&#x4FE1;&#x548C;socket&#x901A;&#x4FE1;
    struct event notify_event; //&#x7528;&#x4E8E;&#x76D1;&#x542C;pipe&#x7BA1;&#x9053;&#x7684;libevent&#x4E8B;&#x4EF6;
    int notify_receive_fd;      //&#x63A5;&#x6536;pipe&#x7BA1;&#x9053;&#x6D88;&#x606F;&#x63CF;&#x8FF0;&#x7B26;
    int notify_send_fd;         //&#x53D1;&#x9001;pipe&#x7BA1;&#x9053;&#x6D88;&#x606F;&#x63CF;&#x8FF0;&#x7B26;
    struct thread_stats stats;  //&#x6BCF;&#x4E2A;&#x7EBF;&#x7A0B;&#x5BF9;&#x5E94;&#x7684;&#x7EDF;&#x8BA1;&#x4FE1;&#x606F;
    struct conn_queue *new_conn_queue; //&#x6BCF;&#x4E2A;&#x7EBF;&#x7A0B;&#x90FD;&#x6709;&#x4E00;&#x4E2A;&#x5DE5;&#x4F5C;&#x961F;&#x5217;&#xFF0C;&#x4E3B;&#x7EBF;&#x7A0B;&#x63A5;&#x53D7;&#x7684;&#x8FDE;&#x63A5;&#xFF0C;&#x6302;&#x8F7D;&#x5230;&#x8BE5;&#x6D88;&#x606F;&#x961F;&#x5217;&#x4E2D;
    cache_t *suffix_cache;      //&#x540E;&#x7F00;cache
    uint8_t item_lock_type;     //&#x7EBF;&#x7A0B;&#x64CD;&#x4F5C;hash&#x8868;&#x6301;&#x6709;&#x7684;&#x9501;&#x7C7B;&#x578B;&#xFF0C;&#x6709;&#x5C40;&#x90E8;&#x9501;&#x548C;&#x5168;&#x5C40;&#x9501;
} LIBEVENT_THREAD;

//&#x5206;&#x53D1;&#x7EBF;&#x7A0B;&#x7684;&#x5C01;&#x88C5;
typedef struct {
    pthread_t thread_id;        //&#x7EBF;&#x7A0B;id
    struct event_base *base;    //libevent&#x5B9E;&#x4F8B;
} LIBEVENT_DISPATCHER_THREAD;

//&#x5DE5;&#x4F5C;&#x7EBF;&#x7A0B;&#x7ED1;&#x5B9A;&#x5230;libevent&#x5B9E;&#x4F8B;
static void setup_thread(LIBEVENT_THREAD *me) {
    me-&gt;base = event_init();//&#x521B;&#x5EFA;libevent&#x5B9E;&#x4F8B;
    if (! me-&gt;base) {
        fprintf(stderr, &quot;Can&apos;t allocate event base\n&quot;);
        exit(1);
    }

    //&#x521B;&#x5EFA;&#x7BA1;&#x9053;&#x8BFB;&#x7684;libevent&#x4E8B;&#x4EF6;&#xFF0C;&#x4E8B;&#x4EF6;&#x7684;&#x56DE;&#x8C03;&#x51FD;&#x6570;&#x5904;&#x7406;&#x5177;&#x4F53;&#x7684;&#x4E1A;&#x52A1;&#x4FE1;&#x606F;&#xFF0C;&#x5173;&#x4E8E;&#x56DE;&#x8C03;&#x51FD;&#x6570;&#x7684;&#x5904;&#x7406;&#xFF0C;&#x540E;&#x7EED;&#x5206;&#x6790;
    event_set(&amp;me-&gt;notify_event, me-&gt;notify_receive_fd,
              EV_READ | EV_PERSIST, thread_libevent_process, me);
    event_base_set(me-&gt;base, &amp;me-&gt;notify_event);//&#x8BBE;&#x7F6E;libevent&#x5B9E;&#x4F8B;

    //&#x6DFB;&#x52A0;&#x4E8B;&#x4EF6;&#x5230;libevent&#x4E2D;
    if (event_add(&amp;me-&gt;notify_event, 0) == -1) {
        fprintf(stderr, &quot;Can&apos;t monitor libevent notify pipe\n&quot;);
        exit(1);
    }

    //&#x521B;&#x5EFA;&#x6D88;&#x606F;&#x961F;&#x5217;&#xFF0C;&#x7528;&#x4E8E;&#x63A5;&#x53D7;&#x4E3B;&#x7EBF;&#x7A0B;&#x8FDE;&#x63A5;
    me-&gt;new_conn_queue = malloc(sizeof(struct conn_queue));
    if (me-&gt;new_conn_queue == NULL) {
        perror(&quot;Failed to allocate memory for connection queue&quot;);
        exit(EXIT_FAILURE);
    }
    cq_init(me-&gt;new_conn_queue);//&#x6D88;&#x606F;&#x961F;&#x5217;&#x521D;&#x59CB;&#x5316;

    if (pthread_mutex_init(&amp;me-&gt;stats.mutex, NULL) != 0) {
        perror(&quot;Failed to initialize mutex&quot;);
        exit(EXIT_FAILURE);
    }

    //&#x521B;&#x5EFA;&#x7EBF;&#x7A0B;&#x7684;&#x540E;&#x7F00;cache,&#x6CA1;&#x641E;&#x61C2;&#x8FD9;&#x4E2A;cache&#x6709;&#x4EC0;&#x4E48;&#x4F5C;&#x7528;&#x3002;
    me-&gt;suffix_cache = cache_create(&quot;suffix&quot;, SUFFIX_SIZE, sizeof(char*),
                                    NULL, NULL);
    if (me-&gt;suffix_cache == NULL) {
        fprintf(stderr, &quot;Failed to create suffix cache\n&quot;);
        exit(EXIT_FAILURE);
    }
} 

//&#x521B;&#x5EFA;&#x5DE5;&#x4F5C;&#x7EBF;&#x7A0B;
static void create_worker(void *(*func)(void *), void *arg) {
    pthread_t       thread;
    pthread_attr_t  attr;
    int             ret;

    pthread_attr_init(&amp;attr);//Posix&#x7EBF;&#x7A0B;&#x90E8;&#x5206;&#xFF0C;&#x7EBF;&#x7A0B;&#x5C5E;&#x6027;&#x521D;&#x59CB;&#x5316;
    //&#x901A;&#x8FC7;pthread_create&#x521B;&#x5EFA;&#x7EBF;&#x7A0B;&#xFF0C;&#x7EBF;&#x7A0B;&#x5904;&#x7406;&#x51FD;&#x6570;&#x662F;&#x901A;&#x8FC7;&#x5916;&#x90E8;&#x4F20;&#x5165;&#x7684;&#x5904;&#x7406;&#x51FD;&#x6570;&#x4E3A;worker_libevent
    if ((ret = pthread_create(&amp;thread, &amp;attr, func, arg)) != 0) {
        fprintf(stderr, &quot;Can&apos;t create thread: %s\n&quot;,
                strerror(ret));
        exit(1);
    }
}

//&#x7EBF;&#x7A0B;&#x5904;&#x7406;&#x51FD;&#x6570;
static void *worker_libevent(void *arg) {
    LIBEVENT_THREAD *me = arg;
    //&#x9ED8;&#x8BA4;&#x7684;hash&#x8868;&#x7684;&#x9501;&#x4E3A;&#x5C40;&#x90E8;&#x9501;
    me-&gt;item_lock_type = ITEM_LOCK_GRANULAR;
    pthread_setspecific(item_lock_type_key, &amp;me-&gt;item_lock_type);//&#x8BBE;&#x5B9A;&#x7EBF;&#x7A0B;&#x7684;&#x5C5E;&#x6027;
    //&#x7528;&#x4E8E;&#x63A7;&#x5236;&#x5DE5;&#x4F5C;&#x7EBF;&#x7A0B;&#x521D;&#x59CB;&#x5316;&#xFF0C;&#x901A;&#x8FC7;&#x6761;&#x4EF6;&#x53D8;&#x91CF;&#x6765;&#x63A7;&#x5236;
    register_thread_initialized();
    //&#x5DE5;&#x4F5C;&#x7EBF;&#x7A0B;&#x7684;libevent&#x5B9E;&#x4F8B;&#x542F;&#x52A8;
    event_base_loop(me-&gt;base, 0);
    return NULL;
}

//&#x963B;&#x585E;&#x5DE5;&#x4F5C;&#x7EBF;&#x7A0B;
static void wait_for_thread_registration(int nthreads) {
    while (init_count &lt; nthreads) {
        pthread_cond_wait(&amp;init_cond, &amp;init_lock);//&#x5728;&#x6761;&#x4EF6;&#x53D8;&#x91CF;init_cond&#x4E0A;&#x9762;&#x963B;&#x585E;&#xFF0C;&#x963B;&#x585E;&#x4E2A;&#x6570;&#x4E3A;nthreads-init_count
    }
}

//&#x5524;&#x9192;&#x5DE5;&#x4F5C;&#x7EBF;&#x7A0B;
static void register_thread_initialized(void) {
    pthread_mutex_lock(&amp;init_lock);
    init_count++;
    pthread_cond_signal(&amp;init_cond);
    pthread_mutex_unlock(&amp;init_lock);
}

//&#x6BCF;&#x4E2A;&#x7EBF;&#x7A0B;&#x6301;&#x6709;&#x7684;&#x7EDF;&#x8BA1;&#x4FE1;&#x606F;
struct thread_stats {
    pthread_mutex_t   mutex;
    uint64_t          get_cmds;
    uint64_t          get_misses;
    uint64_t          touch_cmds;
    uint64_t          touch_misses;
    uint64_t          delete_misses;
    uint64_t          incr_misses;
    uint64_t          decr_misses;
    uint64_t          cas_misses;
    uint64_t          bytes_read;
    uint64_t          bytes_written;
    uint64_t          flush_cmds;
    uint64_t          conn_yields; /* # of yields for connections (-R option)*/
    uint64_t          auth_cmds;
    uint64_t          auth_errors;
    struct slab_stats slab_stats[MAX_NUMBER_OF_SLAB_CLASSES];
}; 

//&#x6BCF;&#x4E2A;slab&#x7684;&#x7EDF;&#x8BA1;&#x4FE1;&#x606F;
struct slab_stats {
    uint64_t  set_cmds;
    uint64_t  get_hits;
    uint64_t  touch_hits;
    uint64_t  delete_hits;
    uint64_t  cas_hits;
    uint64_t  cas_badval;
    uint64_t  incr_hits;
    uint64_t  decr_hits;
};
</code></pre><p><strong>4 &#x8FDE;&#x63A5;&#x7684;&#x521D;&#x59CB;&#x5316;</strong></p>
<pre class="language-"><code>static conn **freeconns;//&#x7A7A;&#x95F2;&#x8FDE;&#x63A5;&#x5217;&#x8868;
//&#x8FDE;&#x63A5;&#x521D;&#x59CB;&#x5316;
static void conn_init(void)
{
    freetotal = 200;//&#x7A7A;&#x95F2;&#x8FDE;&#x63A5;&#x603B;&#x6570;
    freecurr = 0;//&#x5F53;&#x524D;&#x7A7A;&#x95F2;&#x7684;&#x7D22;&#x5F15;
        //&#x7533;&#x8BF7;200&#x4E2A;&#x7A7A;&#x95F4;
        if ((freeconns = calloc(freetotal, sizeof(conn *))) == NULL)
    {
        fprintf(stderr, &quot;Failed to allocate connection structures\n&quot;);
    }
    return;
}
</code></pre><footer class="page-footer"><span class="copyright">&#x5982;&#x9700;&#x4E0B;&#x8F7D;&#x672C;&#x7AD9;&#x5168;&#x90E8;&#x6280;&#x672F;&#x6587;&#x7AE0;&#xFF0C;&#x53EF;&#x4EE5;&#x5728;&#x3010;&#x9AD8;&#x6027;&#x80FD;&#x670D;&#x52A1;&#x5668;&#x5F00;&#x53D1;&#x3011;&#x516C;&#x4F17;&#x53F7;&#x56DE;&#x590D;&#x5173;&#x952E;&#x5B57;&#x201C;&#x6587;&#x7AE0;&#x4E0B;&#x8F7D;&#x201D;&#x5373;&#x53EF;&#x3002;</span><span class="footer-modification">&#x6700;&#x8FD1;&#x66F4;&#x65B0;&#x65F6;&#x95F4;&#xFF1A;
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